It can be a quadrilateral, though quadrilaterals are 4-sided shapes in general.
A 1000 sided polygon is called a chiliagon.
A five-sided geometric shape is a pentagon.
A fourteen-sided regular polygon is called a tetradecagon or a tetrakaidecagon.
you call a seven sided shape a heptagon.
A nine sided POLYGON is called a nonagon. Any plain shape bounded by nine straight sides is a nonagon.
An irregular polygon
An irregular pentagon I think... :)
A 20-sided shape is called a dodecahedron.
An eighteen-sided shape is called an octakaidecagon, or octadecagon.
Nonagon.
a heptigon
The names of polygons with 40 sides - Tetracontagon.
A 1000 sided polygon is called a chiliagon.
A Pentagon. A five sided figure is a pentagon
A five-sided geometric shape is a pentagon.
A polygon is an unequal six sided shape. A polygon or hexagon is the name used weather the sides are even or not.
A Square a square Quadrilateral I think